MP204

MP204 4-Channel Power Amplifier FEATURES 4 Channel Power Amplifier for Ricoh GEN4/GEN5 Print Heads Operate from Single High Current Supply 7.5A Pulsed Current (C=320nF, R=0.1 Ω @ 15 V/μsec) 1.5A Continuous Current Programmable Current Limit APPLICATIONS Ricoh GEN4 and GEN5 Print Heads DESCRIPTION The MP204 is a high output current quad channel amplifier for driving the Ricoh GEN4 and GEN5 print heads. The MP204 utilizes ICs combined with discrete semiconductors and passive elements on a thermally conductive insulated metal substrate, delivering very high power from a compact module. The amplifier gain is fixed at 14V/V. Internal compensation provides optimum slew rate and insures stability. The only external components required are the current limit resistors RLIM, a series isolation resistor RS and power supply bypass capacitors. Figure 1: Equivalent Schematic (Channel A) +VB +VS CHAN_IN_A + INPUT AMPLIFIER - -V B BIAS & OVERCURRENT LIMIT OUTPUT BUFFER ...